Clinically proven

BPA & Teflon-free

Cruelty-free

95% recycled plastic

24/7 expert support

Expanding Floss

4.9

Rated 4.9 out of 5 stars

4.9 Stars (918 Reviews)

The boss of all floss

$5.99

The Expanding Floss is clinically proven to remove 2x more plaque than regular unwaxed dental floss*.

Yes, we've made flossing twice as effective. This is all thanks to our incredible network of dentists, hygienists, and our Ambassador community of 40,000+ Dental Professionals who demanded better.

With expanding technology, soft shred-resistant black thread, a smart coating, and a delicious aroma, this floss has transformed flossing for the better. We can’t wait for you to love it, too.

Aroma: Mint Eucalyptus
*In laboratory tests; data on file at burstoralcare.com/clinical.

Refill plan: $5.00 per replacement floss every 12 weeks

Aroma: Mint eucalyptus

Add toothpaste

Wild Mint Toothpaste

$9.99

4.9

Rated 4.9 out of 5 stars

4.9 Stars (1,542 Reviews)

$6.99 paste refill every 12 weeks, cancel anytime.

Refill plan: $5.00 per replacement floss every 12 weeks, cancel anytime

Floss 101

The Expanding Floss is clinically proven to remove 2x more plaque than regular unwaxed dental floss*.

Yes, we've made flossing twice as effective. This is all thanks to our incredible network of dentists, hygienists, and our Ambassador community of 40,000+ Dental Professionals who demanded better.

Benefits

Clinically proven results:

Removes up to 85% of plaque on tooth surfaces between teeth.
Up to 58% plaque reduction for deep cleaning on root surfaces just below the gumline.*
Removes 2x more plaque than regular unwaxed dental floss.

A better flossing experience:

300+ strong fibers are woven together to effectively catch all the debris between your teeth.
Gives you the super satisfying, refreshing feeling of seeing the gunk being pulled out.
A delicious, minty fresh aroma that is like a spa day for your mouth.
Intelligently built so you don't have to work as hard.

Formula

Technology

Our Dental Professionals (and us!) don’t want you putting bad crud in your mouth. That’s why our vegan, cruelty-free floss uses natural, effective ingredients with no parabens, BPA, Teflon, or PFAS.

What makes it so special?

Expanding technology reaches more surface area than typical floss.
Black color provides a super satisfying feeling by showing all the pesky debris you pull from between your teeth.
Adsorptive xylitol coating pulls away stubborn stains while helping fight cavities.

Mindful ingredients: Microcrystalline wax, mint eucalyptus aroma, xylitol.
*In laboratory tests; data on file at burstoralcare.com/clinical.

You get

2x more plaque removal than regular unwaxed dental floss
40-yards of black, expanding floss
A re-usable case made of 95% recycled plastic

What you don’t get:

Parabens (yuck)
Phthalates (double yuck)
Teflon
BPA
Major allergens
Artificial sweeteners, flavors or colors

*In laboratory tests; data on file at burstoralcare.com/clinical.

Refill plan: $5.00 per replacement floss every 12 weeks, cancel anytime

You pay today:

$5.99

Watch it, shop it

See what people think and shop the faves.

Co-created with 1000s of hygienists & dentists

"I love the BURST floss for its color! The black helps my patients see the plaque removal and the expanding technology has more surface area to grab bacteria."

- Kim F., RDH & BURST Ambassador

Less gunk = better breath

Clinically tested and shown to remove up to 85% of plaque on surfaces toothbrushes can’t reach and 2x more plaque than a regular unwaxed dental floss.*

*In laboratory tests. Data on file. Download at burstoralcare.com/clinical.

See the results

Get the instant satisfaction of seeing exactly what’s been lurking between your teeth, motivating you to keep on flossing!

Refillable case for less waste

Reduce and reuse with our lightweight, compact, 95% recycled plastic case and 40-yard replacement bobbins.

The 8 Best Lip and Oral Care Products of 2021, according to Health Editors

“We’ll be the first to admit that we don’t always remember to floss—unless, of course, it’s with this innovative version. The fibers expand when they come in contact with saliva, which means the floss strands glide between your teeth easily and take more gunk out with them. The charcoal coating helps absorb stains and dirt (so much you can actually see it on the floss if you want to gross yourself out). The refillable packaging is just icing on the cake”

“This floss expands when it touches saliva, so it hugs every nook and cranny between your teeth. The charcoal coating helps reduce stains but also means you can see everything that comes out of your mouth (gross but satisfying).”

“This innovative string takes flossing to the next level. It expands upon contact with saliva so that it can remove even more plaque from between your teeth.”

Curious what people think?

Our BURST Ambassador Dental Professionals and customers know their stuff. You should listen to them.

4.6/5 (336 Reviews)

“If you didn't like flossing before, you're going to love it now. The feeling of being able to see the nasty that you removed from this black floss isjust so satisfying. Never thought I' II be so excited to floss. Best stocking stuffer to put in every Christmas bag this season. Just reviewing this floss just made me want to eat and floss again.”

Marisa P.

RDH, BURST Ambassador

“Hands down (or fingers up) my favorite floss! I love that it is black and I can see all the little nasties coming out of my teeth and gums. l love that it is helping remove the stains from my teeth due to my coffee addiction. And it tastes AMAZing!”

Nicole K.

RDH, BURST Ambassador

“BURST floss is my favorite to date and I'll tell you why. The black color makes it so easy to SEE your progress!!! The aroma is fantastic with essential oils to help with gum health! lt's fine enough to reach all those hard to get to places also!!!”

Jenee C.

RDH, BURST Ambassador

See all reviews

Got questions?

How is the BURST floss different from other floss?

Unlike traditional options, BURST Floss has been meticulously designed to remove up to 85% of plaque from areas that regular toothbrushes can't reach and 2x more plaque than unwaxed dental floss. So, get ready for a thorough clean! Its uniquely black color not only provides immediate, gunk-ridding satisfaction by highlighting debris removed from between your teeth but also boasts a high-quality textured thread with adsorptive xylitol coating that effectively pulls away stubborn stains and aids in fighting cavities. Additionally, our floss is mindfully made, being cruelty-free and vegan, with a natural Mint Eucalyptus aroma and free from parabens, BPA, or PFAS. To top it off, it is housed in an eco-friendly 95% recycled plastic case, reflecting our commitment to sustainability. Boom!

Our floss stands out in the market due to its unique features and careful creation process. Developed in collaboration with a community of over 40,000 dental professionals, the Expanding Floss is the result of extensive testing and consultation with this enthusiastic team, setting it apart from all other dental floss options on the market. We actively sought the input of these experts, valuing their insights to create a product that truly caters to your oral health needs.

Why does the BURST floss expand and how?

The BURST Floss is made with technology that reacts to the saliva and friction in your mouth, which then causes the filament to expand. The expansion of the filament will reach into the nooks and crannies in your teeth to get rid of your plaque.

Does BURST floss shred?

Nope! It boasts a high-quality textured thread with an adsorptive xylitol coating that effectively pulls away stubborn stains and aids in fighting cavities. Strong and protective, sign me up!

Why is BURST floss black?

The BURST Floss is uniquely black for a purpose – it instills value for flossing by providing immediate satisfaction through its distinctive color. The black hue highlights the debris removed from between your teeth, giving you a visual representation of the effectiveness of your flossing. This not only motivates you to keep flossing but also addresses the common issue where individuals might not floss as often if they can't see tangible results.

Additionally, BURST Expanding Floss is designed to cater to various dental needs. If you've ever been advised to manipulate floss, such as knotting it, doubling it, using tape, or employing super floss, BURST Floss handles all of those scenarios. It’s kinda like a floss-spouting superhero! Better yet, its versatility makes it great for open contacts, light contacts, wide embrasures, implants, and even food traps. In essence, this is the one floss that does it all, making your flossing routine simpler, more effective, and visually rewarding.

Why are you removing charcoal from your brush heads and floss bobbins?

We thought long and hard about this and want to share the reasoning behind this choice with you. While we still believe in the benefits of charcoal for oral hygiene, we also value the feedback and preferences of our dental professionals and customers.

More questions?
Find answers on our FAQs page.

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Probiotics 101 :
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4.9

Rated 4.9 out of 5 stars

Based on 918 reviews

Total 5 star reviews: 843 Total 4 star reviews: 45 Total 3 star reviews: 20 Total 2 star reviews: 6 Total 1 star reviews: 4

97%would recommend this product

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918 reviews

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RB
Rochelle B.
13 seconds ago
Rated 5 out of 5 stars
New favorite floss
Soft and expands well! Great thickness and love the black color. Good flavor and works well compared to my previous favorite.
Was this helpful?
KM
Kaitlyn M.
Verified Buyer
6 days ago
Rated 5 out of 5 stars
Favorite floss
Very thick, love that it’s black so I can see everything it grabs off of my teeth. Very nice and subtle smell and flavor also. Beats out Cocofloss because of the price point too.
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E
Emma
Verified Reviewer
1 week ago
Rated 5 out of 5 stars
Will never buy anything else!
I will never buy a floss that isn’t this one. No other floss makes my teeth feel as clean. Seriously so worth it.
Was this helpful?
L
Lindsay
2 weeks ago
Rated 5 out of 5 stars
Expand your life with expanding floss
I personally found this to be amazing! Not only the taste but the expanding floss works SO WELL! It's like having little micro brushes in between each tooth!
Was this helpful?
M
Matthew
Verified Reviewer
1 month ago
Rated 5 out of 5 stars
A Five-Tooth Rating
Literally the first dental floss I’ve used in my 45 years that I like. It’s not waxy or gross, it’s not flimsy and prone to break or snap mid-floss, it doesn’t slip out of your hand or off of your fingers, and it doesn’t cut into my gums. I’ve finally stopped lying to my dentist about flossing and have been able to work it truthfully into my daily routine.
Well, not truthfully.
But totally TOOTHfully.
(My only hesitation in writing this review was that you use star ratings instead of tooth ratings, because this is definitely a five tooth product 🦷🦷🦷🦷🦷)
Was this helpful?

Reviews LoadedReviews Added

Expanding Floss

Floss 101

Benefits

Formula

You get

Floss 101

Benefits

Formula

You get

Watch it, shop it

Co-created with 1000s of hygienists & dentists

Go easy on gums

Less gunk = better breath

Instantly expands

See the results

Refillable case for less waste

Curious what people think?

Got questions?

Customers also bought

Country

Expanding Floss

Floss 101

Benefits

Formula

You get

Floss 101

Benefits

Formula

You get

Watch it, shop it

Co-created with 1000s of hygienists & dentists

Go easy on gums

Less gunk = better breath

Instantly expands

See the results

Refillable case for less waste

Curious what people think?

Got questions?

Customers also bought